The Complete Guide to Choosing the Best Diamonds (2024)

Looking to invest in a beautiful diamond (or diamonds) can be intimidating because most buyers don’t have the trained eye of a gemologist. It can feel like you’re at the mercy of the jeweler’s knowledge, and frankly, their honesty. We’re going to empower you with everything you need to know to choose the best diamonds.

The Basics: Learning The 4Cs

You can’t talk about what to look for in a diamond without the fundamentals, the 4Cs: Clarity, Cut, Color, and Carat. Let’s dive right in.

Clarity

The majority of diamonds have blemishes called inclusions. Some inclusions are not visible to the naked eye, but luckily, diamonds are graded at 10x magnification as an industry standard, so you’ll be able to determine the clarity without having to see your diamond under a microscope. The diamond clarity scale ranges from 0 (also called Flawless/IF by the American Gem Society), representing a diamond with zero inclusions, to a 13 for a diamond containing many inclusions.

A diamond that has excellent clarity will appear whiter and shinier than a diamond with poor clarity, which will appear darker. It can be helpful to ask to see different clarity diamonds in a similar cut, color, and carat side-by-side while you’re shopping because you’ll likely be able to see the distinction right away and will develop a better understanding of what clarity represents. However, the cut and color will also greatly impact the sparkle of your diamond, so let’s continue with those.

Cut

The cut of your diamond is one of the most important factors in its luminosity because it affects the way light enters and is reflected by the diamond. The right cut can make diamonds of lesser clarity appear more brilliant, and it can also make a diamond appear larger than it really is. If a diamond is too deep or too shallow, it will lose in brilliance, so finding the right height and proportions is key, as is the precision of the cut.

When cutting diamonds, some cutters will opt to maximize the size because most customers are willing to pay more for a bigger diamond, but this can sacrifice its appearance and quality. If your diamond has a GIA cut grading, which ranges from poor to excellent, that can be very helpful in determining whether the cut is both optimal and precise.

Color

Diamonds come in all kinds of colors, but colorless white diamonds are rare and are generally the ideal. You may be wondering about yellow diamonds, which have gained in popularity over the recent years. If they’re so undesirable, why are they so valuable? This is because vibrant, deep yellow diamonds are also rare, and therefore also a valuable type of diamond. A fair yellow diamond will not be as valuable or desirable.

The diamond color grading ranges from D (colorless) to Z (yellow). Most often, jewelers will recommend sticking somewhere between D and K for the best quality diamond. While D is obviously the optimal grading, some individuals actually prefer a lesser grading due to the perceived warmth of the diamond. If you’re purchasing for an investment, however, we recommend getting as close to a D grading as your budget allows.

Carat

This tends to be the most widely known factor taken into consideration when choosing a diamond: its weight. The larger the diamond, the higher its value, right? Well, not always. If the three Cs above aren’t there, its carat won’t matter as much. It’s much better to have a quality diamond that is clear, colorless, and exceptionally cut than to have a dull or tinged larger diamond—not only in terms of its appearance but in terms of its financial value as an investment. It’s a delicate balance between size and quality, but as far as we’re concerned seeing so many clients borrow against their diamonds or sell their diamonds, quality will always win. You’ll be glad to have that financial safety net, and it’ll be a highly valuable gem to pass down to future generations.

Beyond the 4Cs

Shape

Another factor besides the quality of the diamond is the shape you’re going to choose. Not only will this affect its appearance—for example, a round brilliant diamond will always outshine an emerald cut—but it will also affect its retained value. Round brilliant diamonds are the highest in demand by far for the reason we just mentioned, their sparkle, and also because they require more raw material to cut from, so they will always outvalue other diamonds of similar clarity, cut, color, and carat. Princess cut diamonds are the runner-up.

Seller

When you’re making such a large and important purchase, choosing a reputable jeweler that you fully trust is key. Even with training, it can be very difficult to see the quality of a diamond in the store. In fact, the lighting is often designed to make gems sparkle their brightest, so you might find yourself thinking that all the diamonds look great. How do you ensure that you’re getting a quality diamond from a retailer?

If your budget allows, we recommend turning to a luxury brand for diamond jewelry, such as , Bulgari, Cartier, or Van Cleef & Arpels. These are some of the luxury jewelry brands we accept most frequently at Qollateral as collateral for loans and for purchases, so we can attest that they hold their value exceptionally well and make solid financial investments. Their unparalleled reputation is also a foolproof way to ensure you’re getting the quality diamond you’re being promised.

Another way to find a reputable seller of the best diamonds or diamond jewelry is to look for a dealer that is AGS (American Gem Society) or GIA (Gemological Institute of America) certified. Fun fact: GIA is our neighbor here at the International Gem Tower. Both certifications are a surefire way to protect yourself when purchasing a diamond.

We hope this helps you feel more confident in your next diamond purchase. Diamonds are not only beautiful, they’re an incredibly smart investment. At Qollateral, we help clients turn their diamonds into same-day cash for a short-term collateral loan, and then pick them back up when they’re ready like nothing ever happened. We also purchase diamonds, including diamond engagement rings that could be bringing you same-day cash instead of memories you’re ready to put to rest. We’ve seen over and over again how well quality diamonds retain their value and provide a financial safety net to our clients, so we highly recommend considering a diamond’s investment potential as well as its appearance when going into the purchase.

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The Complete Guide to Choosing the Best Diamonds (2024)

FAQs

Which diamond is best, GH or IJ? ›

For the best value in what would appear to the naked eye as a colorless diamond, look for G-J diamonds. Because color is easier to detect in larger diamonds, opt for G-H in diamonds over 1 carat, and I-J for those under 1 carat.

Are I2 diamonds worth buying? ›

Mined or lab diamonds with an I2 grade have noticeable inclusions that can impact the overall beauty and brilliance of the diamond. However, due to this, I2 diamonds are budget-friendly. So, if you're looking at lab grown diamond price as the main purchase decision factor, you could consider I2 grade.

What are the 4 C's of diamonds ranked? ›

Out of the 4 C's of diamonds, the cut of the diamond is the most important. This is followed by color, clarity, and carat weight.

How do you pick the perfect diamond? ›

One of the most critical factors in selecting a diamond is its cut. The diamond cut refers to the proportions and angles of the diamond's facets, which determine how light interacts with the stone. A well-cut diamond will reflect and refract light in a way that maximizes its brilliance and fire.

Is VS1 or VS2 better? ›

VS1 is higher than the VS2 grade. The only difference between the two is a VS2 diamond's impurities can be easier to spot than those in a VS1. Imperfections in a VS2 grade diamond are similar in size and quantity to those in a VS1.

Are IJ Si diamonds worth buying? ›

Despite their SI clarity grade, which denotes slight inclusions visible under magnification, these diamonds still dazzle with brilliance and fire. They make an excellent choice for those seeking both beauty and value.

What size diamond is best value for money? ›

If you are on a budget and want to get the most bang for your buck, it's recommended that you stick to a diamond with a VS2 or SI1 clarity grade. However, if you are buying a diamond that is larger than 1.5 carats, it's better to buy at least a VS2, since inclusions are easier to spot in larger sized diamonds.

How much should I expect to pay for a 2 carat diamond? ›

On average, you can expect the cost of a 2 carat diamond to widely vary depending on its shape, cut quality, clarity, color, and whether it's a naturally mined or lab diamond. The varying cost can range from $5,000 to $50,000 or more.

What shape diamond holds the best value? ›

Popularity On The Market

For example, because round diamonds are the most popular and desired diamond shape, a round diamond will fetch a higher price on the secondhand market than, say, a marquise diamond with the exact same attributes. The more popular the diamond shape, the more those diamonds will fetch.

What matters most when buying a diamond? ›

Diamond cut is the single most important of the 4Cs when it comes to the physical beauty of a diamond. Why? Because a diamond's cut determines how much it sparkles. The number of facets, the angle of the facets, and the symmetry and alignment of the shape will affect how the diamond returns light.

Is cut or color more important in diamonds? ›

Cut is the most important determinant of the overall appearance of a diamond. No Clarity grade can help a poorly cut diamond; however, an excellent cut diamond can have a lower color (G-H) or clarity (SI1-SI2) and still look quite beautiful due to its superior ability to create sparkle and brilliance.

Which alphabet diamond is best? ›

D is the whitest a diamond can get. D, E, or F, are considered colorless which means that they are the most sought after, and more expensive due to their rarity. Diamonds that are G, H, I, or J, are near colorless. As you continue down the alphabet you will begin to see a faint yellow color.

Which clarity diamond should I buy? ›

For diamonds over 2 carats, a clarity grade of VS2 or higher is the safest bet for avoiding any signs of visible inclusions. In diamonds between 1 and 2 carats, clarity grades of SI1 or better will not have inclusions easily visible to the naked eye.

What carat diamond is best? ›

A 1 carat diamond is a popular choice for engagement rings and other jewellery. However, the appearance of a 1 carat diamond can vary depending on its cut. Generally, a well-cut 1 carat diamond will have a diameter of around 6.5mm, but this can vary slightly depending on the diamond's proportions.

How do you tell if a diamond is a good diamond? ›

Diamonds are graded according to the 4Cs — cut, color, clarity, and carat weight. These grades determine the quality and value of a diamond. Once a diamond's 4Cs have been assessed by a gemologist, they register this information in a diamond grading report.

Are GH diamonds good quality? ›

G-H – Colour is difficult to detect with the naked eye. The diamond is near colourless. Colour may be detected when placed next to a diamond of better grade. These diamonds are of excellent value and ideal for a platinum or white gold setting.

Is H or J better diamond color? ›

Color Is More Visible In Large Diamonds

If you're buying a diamond under 1 carat, you might consider choosing an I, J, or K color diamond. Going over 1 carat? We recommend H color-grade diamonds or higher. This is because the larger a diamond is, the more likely it is to show any color.

Is ij a good diamond color? ›

G-H – Near-colorless. Color noticeable when compared to diamonds of better grades, but these grades offer excellent value. I-J – Near-colorless. Color slightly detectable.

Which is better, G or H color diamond? ›

G or H Color Diamond? Diamond experts recommend that you should not go beyond the H color if you purchase a diamond. The difference between G and H color diamonds is not worth the extra price because the color difference is almost impossible to detect with the naked eye.

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